Re: [PATCH v7 2/3] wifi: mwifiex: add dt flag to avoid conflict with platform reg domain

On Thu, 27 Aug 2026 at 18:33, Krzysztof Kozlowski <[email protected]> wrote:
>
> On 27/08/2026 15:03, Georgi Valkov wrote:
> > WRT3200ACM and WRT32x routers always report a fixed US regulatory domain
> > from the mwifiex ROM, which conflicts with the platform regulatory
> > configuration on units sold outside the US market. For example:
> > - phy0 mwlwifi 5 GHz, hard-coded region 98 EU mapped to FR
> > - phy1 mwlwifi 2.4 GHz, hard-coded region 98 EU mapped to FR
> > - phy2 mwifiex 2.4 and 5 GHz, hard-coded region US
> >
> > When the system boots, it detects a conflict between the user selected
> > region and the radios, e.g. BG FR US, and applies extreme restrictions,
> > preventing phy0 from starting on any DFS channel. phy2 works.
> >
> > Add a device-tree flag, which allows affected devices, where the radio
> > conflicts with the platform to ignore the incorrect regulatory hint in
> > the ROM of the radio, so the platform regulatory domain can be used.
> > This does not allow the user to change the regulatory configuration of
> > any radio. It only allows phy0 to start and operate according to its
> > certified configuration.
> >
> > The change affects only platforms which explicitly define this flag, and
> > helps overcome the incorrect behaviour of proprietary radio firmware.
> >
> > [1] https://github.com/kaloz/mwlwifi/issues/173#issuecomment-307879699
> > [2] https://github.com/openwrt/openwrt/issues/9956
> >
> > Tested-on: WRT3200ACM, OpenWrt
>
> OK, so this comment from v6 was not about binding, but this is still
> wrong - there is no such tag. Just make it a standard sentence.
>
> Do not introduce OpenWRT rules in to the upstream kernel.

Dropped the invalid tag. I hope this is suitable:
The change has been tested on OpenWrt and fixes the issue where
phy0 does not start on WRT3200ACM-EU when a DFS channel is used

I sent v8:
https://lore.kernel.org/linux-wireless/[email protected]/T/#t

Greetings!
Georgi Valkov